82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2021-2022, Microsoft Corporation.
|
||
|
|
*
|
||
|
|
* Authors:
|
||
|
|
* Beau Belgrave <beaub@linux.microsoft.com>
|
||
|
|
*/
|
||
|
|
#ifndef _UAPI_LINUX_USER_EVENTS_H
|
||
|
|
#define _UAPI_LINUX_USER_EVENTS_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/ioctl.h>
|
||
|
|
|
||
|
|
#define USER_EVENTS_SYSTEM "user_events"
|
||
|
|
#define USER_EVENTS_PREFIX "u:"
|
||
|
|
|
||
|
|
/* Create dynamic location entry within a 32-bit value */
|
||
|
|
#define DYN_LOC(offset, size) ((size) << 16 | (offset))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Describes an event registration and stores the results of the registration.
|
||
|
|
* This structure is passed to the DIAG_IOCSREG ioctl, callers at a minimum
|
||
|
|
* must set the size and name_args before invocation.
|
||
|
|
*/
|
||
|
|
struct user_reg {
|
||
|
|
|
||
|
|
/* Input: Size of the user_reg structure being used */
|
||
|
|
__u32 size;
|
||
|
|
|
||
|
|
/* Input: Bit in enable address to use */
|
||
|
|
__u8 enable_bit;
|
||
|
|
|
||
|
|
/* Input: Enable size in bytes at address */
|
||
|
|
__u8 enable_size;
|
||
|
|
|
||
|
|
/* Input: Flags for future use, set to 0 */
|
||
|
|
__u16 flags;
|
||
|
|
|
||
|
|
/* Input: Address to update when enabled */
|
||
|
|
__u64 enable_addr;
|
||
|
|
|
||
|
|
/* Input: Pointer to string with event name, description and flags */
|
||
|
|
__u64 name_args;
|
||
|
|
|
||
|
|
/* Output: Index of the event to use when writing data */
|
||
|
|
__u32 write_index;
|
||
|
|
} __attribute__((__packed__));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Describes an event unregister, callers must set the size, address and bit.
|
||
|
|
* This structure is passed to the DIAG_IOCSUNREG ioctl to disable bit updates.
|
||
|
|
*/
|
||
|
|
struct user_unreg {
|
||
|
|
/* Input: Size of the user_unreg structure being used */
|
||
|
|
__u32 size;
|
||
|
|
|
||
|
|
/* Input: Bit to unregister */
|
||
|
|
__u8 disable_bit;
|
||
|
|
|
||
|
|
/* Input: Reserved, set to 0 */
|
||
|
|
__u8 __reserved;
|
||
|
|
|
||
|
|
/* Input: Reserved, set to 0 */
|
||
|
|
__u16 __reserved2;
|
||
|
|
|
||
|
|
/* Input: Address to unregister */
|
||
|
|
__u64 disable_addr;
|
||
|
|
} __attribute__((__packed__));
|
||
|
|
|
||
|
|
#define DIAG_IOC_MAGIC '*'
|
||
|
|
|
||
|
|
/* Request to register a user_event */
|
||
|
|
#define DIAG_IOCSREG _IOWR(DIAG_IOC_MAGIC, 0, struct user_reg *)
|
||
|
|
|
||
|
|
/* Request to delete a user_event */
|
||
|
|
#define DIAG_IOCSDEL _IOW(DIAG_IOC_MAGIC, 1, char *)
|
||
|
|
|
||
|
|
/* Requests to unregister a user_event */
|
||
|
|
#define DIAG_IOCSUNREG _IOW(DIAG_IOC_MAGIC, 2, struct user_unreg*)
|
||
|
|
|
||
|
|
#endif /* _UAPI_LINUX_USER_EVENTS_H */
|